I don't have a problem with Perry going to a prayer rally (or any other reasonable religious event), I have a problem with the Governor holding an exclusive prayer rally, publicizing it as the Governor, possibly using public funds, and inviting other governors.
I also don't have a problem with any elected official saying they are religious, attending services, or leading a prayer in times or stress or tragedy.
It's the fact that the highest government office/official in the state is excluding, denigrating, and hoping to convert other religions that is the problem.
So you are saying that elected officials give up their right to practice their religion once elected? Or is it only Christian, Republican elected officials?
Where is the evidence of Perry "denigrating" anyone or their religion? Where is the evidence that public funds are being used?